Monism and Dualism, Metaphysics and Ethics

Contrary to persistent misperceptions: 

Metaphysical dualism implies Ethical monism. 

Metaphysical monism implies Ethical dualism. 

A Theology of Jesus and Aliens

I recently got into a discussion with someone about the growing evidence that our planet has been visited by Extraterrestrial Beings for some time now. My friend speculated that perhaps God and Jesus and Muhammad and Buddha could have been aliens. He ended his statement with "one thing is certain, Earth isn't special enough to be the only planet that has life. Not even close."

I have written bits and pieces about this in other places, speculating about how aliens could be tied into Christian Theology and World Religions (if aliens exist at all). I have speculated about how alien life could tie into an overall framework to understand why God made the world, as well as how alien life might be part of the evidence for God's existence. But I have never written a full description of why I think aliens probably exist, and how we might understand their possible visitation to our planet. That is what I would like to do here.